Coin-controlled gasoline pump



Much 24, 1925. ,530,639 E. D. BAKER COIN CONTROLLED GASLINB PUIP Filed Fepl* 21. 19,24 2 Sheets-Sheet l s@ @dan 3 wwe/141501,'

March 24, 1925, 1,530,639

E. D. BAKER COIN CONTROLLED GASOLXN! PUIIP Filed m 21. 1924 2 shuts-snm 2 Q4/ggf'. .5.

Sum/nto@ Patented'Y Mar. 2.4., 1925.

EDWARD I). BAKER, OF ILLNOIS.

GOIN-CONTROLLED GASOLINE ZEU'MP.

Application mea iebruary a1, 1924. serial naissante.

To all lwho/m. t may concern.:

Be it known that EDWARD D. BAKER, a citizen of the United States, residing at Marissa, in the county of'St. Clair and State of Illinois, has invented certain new and useful Improvements in CoinfrControlled Gaso line Pumps, of which the following is a specification.

This invention relates to coin controlled pumps especially adapted to be used lfor dispensing gasoline or motor oil and it con-4 sists inthe novel'ifeatures hereinafter descrlbed and claimed.

An object of the invention is to provide a pump which 'is normally retained in a locked or inoperative position, there bein'g provided within the body ofthe pump electric mseans and instrumentalities adapted to unlock and release the operative parts of the pump, upon the insert-ion of a coin .in the casing, whereby the customer or purchaser may manipulate the pump and draw or extract from the same alquantity of the gasoline or oil which is the equivalent in value of the coin which has been inserted in the body of the pump and thereby makes it possible to dispense the gasoline or oil without the attention of the salesman or attendant to-conduct and supervise the operation and manipulation of the pump.

The pump will require very little attention and its use eliminates the service of an attendant. The pump may be used to advantage in rural districts and small towns and other places where it is difficult toobtain gasoline at night. The pump is at all times in condition to dispense the gasoline and may be used to advantage at garages and similar places where help is scarce in that the dispensation of the gasoline may be continued by the purchaser and without'the services of an attendant or assistant. The pump may be made in various sizes, some of them of a size adapted to dispense gasoline and others of appropriate size for the dispensation of machine or motor oil.

l'n the accompanying drawings:

Fi'gure 1 is a side elevation of the pump showing the casing thereof vin section.

Figure 2 is a fragmentary vertical transverse sectional view of the pump.

Figure 3 is a horizontal sectional view of the pump cut on the line 3--3 of Figure 1.

Figure 4. is a fragmentary detail sectional view of the upper portion of an oil cylinder used in the pump.

indicated at 12 in the drawings.

Figure 5 is a similar view of the lower portion of the oil cylinder.

.Figure 6 is a fragmentary perspectivel view of a locking lever used in the pump. Figure 7 is a fragmentary perspective View of the electric circuit closing device used in the pump.

Figure'8 is a transverse sectional view of a coin chute used in the pump and taken on the line 8 8 of Figure 1.

Figure 9 is a similar View of the coin chute taken on the line 9 9 of Figure 1.

Figure l0 is a fragmentary detail View of the coin chute, the circuit closing mechanism and illustrating a coin in position and serving as a circuit closure.

The pump comprises a casing 1 which is mounted upon a pedestal .-2 adapted to be positioned upon a suitable foundation, not shown.

An oil supply pipe 3 leads through the 5 is slidably mounted inthe cylinder 4 and is provided with valve controlled ports 6 which pass transversely therethrough. A piston rod 7 is connected at its lower end with the center of the piston 5 and passes through the top side of the cylinder 4. The upper end of the rod 7 is pivotally connected with a pitman rod 8 and the upper end of the said rod 8 is connected with a pin 9 which is carried in a block 10.

A coin chute 11 penetrates the upper portion o-f the casing l1 and the said chute is oblong in transverse section. At the point where the chut-e penetrates the casing, the longer transverse dimension of the chute is vertically disposed and at the interior of the casing, the chute is twisted so that its longer transverse dimension is horizontally disposed. The chute 11 is downwardly and inwardly inclined within the casing 1 and the horizontally disposed portion thereof is A cam disk 14' is journalled in the casing 1 with the upper portion of its periphery at the delivery end of the chute 11 and the said cam disk carries upon its periphery a pin`13 which is normally disposed at the delivery end of the chute 11 but spaced therefrom:

Spaced terminals 15 are located at the upper portion of the periphery of the disk 14 and in the vicinity of the coin delivery end of the chute 11, Electric wires 16 and 17 are connected with the terminals 15 and the wire 16 leads to batteries 18 located in the casing 1 and the wire 17 leads to magnets 19 located in the casing 1. A wire 20 connects themagnets with the batteries 18. The upper portion of the coin chut-e 11 is provided at its lower side with an opening 12a which is less in' transverse breadth than the transverse breadth of the coin which is to be passed through the chute 11 and which will operate the unlocking mechanism of the pump. Therefore if a spurious coin or a slug is inserted in the chute 11 and is of less transverse lbreadth than the breadth of the required coin, the said spurious coin or slug will fall from the chute 11 through the i opening 12a, edgewise and deposit in the lower'portion of the casing 1 without operating the pump releasing mechanism.

The horizontal portion 12 of the chute 11 is provided at its lower side with an opening 12 which is less in transverse breadth than the transverse breadth of the prescribed coin which is to be used to operate the lock releasing mechanism. Therefore if a spurio'us coin or a slug of improper transverse Vdimension is inserted in the coin chute 11 and moves over the opening 12a, the said spurious coin or slug will fall sideways through the opening 12 in the horizontal portion 12 of the com chute 11 and deposit in the lower portion of the casing 1 without operating the lock releasing mechanism of the pump.

Then a coin of proper denomination, as for instance, a twenty-tive cent piece, is 1nserted in the coin chute 11, it rolls down the said chute and slides along the horizontal portion 12 thereof and passes out of the delivery end of the chute 11 and strikes the pin 13 upon the periphery of the disk 14. At the same time, the opposite side portions of the said prescribed coin come in contact with the ends ofthe terminals 15 and bridge the space between them and completes the electric circuit from the batteries 18 along the wires 16 and 17 to the magnets 19 which move a lever, hereinafter to be described and said lever releases the disk 14 whereby the said disk may be rotated by manually operable means, hereinafter to be described, and the pump is actuated to draw the oil through the pipe 3 into the cylinder 4 by the movement of the piston 5 therein and to eject the oil from the cylinder by the movement of the said piston as will be explained hereinafter.

A valve 21 is located in the cylinder 4 and normally closes the upper .end of the pipe 2. The valve 21 moves to an open position when the piston 5 moves in an upward direction and permits the oil to iowl through the pipe 2 into the cylinder 1. Upon the downward stroke of the piston, the valve 21 closes and the oil passes up through the ports 6 in the piston 5 and enters the upper portion of the i cylinder 4. A pipe 22 is connected with the top of the cylinder 4 and a check valve 23 is locatedV at the lower end of the pipe 22. As the piston moves in an upward direction in the cylinder 4, the valve 23 moves t0 an open position and the oil is forced upwardly into'the pipe 22. An oil receptacle 24 is mounted upon the top of the casing 1 and receives the oil from the pipe 22. The said receptacle is provided at its side with a series of vertically arranged graduations 25 which indicate the number of gallons contained within the receptacle 24. A signal lamp 26 vof conventional form is mounted upon the receptacle 24 and is provided with a valve 29 which is normally closed. A handle lever 30 is connected with the stem of the valve 29 and is pivoted upon the casing 1. 'lhe pipe 28 is connected with a hose 31, the nozzle of which may be inserted in the receptacle which is to receive the oil.

When the oil is forced out of the cylinder 4 it moves up along the pipe 22 into the receptacle 24 until the desired quantity has been accumulated in the said receptacle and which may be ascertained by observing the graduations upon the scale 25 and comparing the same with the level of lthe oil in the receptacle 24. The nozzle of the hose 31 is then inserted in the receptacle which is to receive the oil, and the purchaser pulls down the outer end of the lever 30 whereby the oil is permitted to drain out of the receptacle 24 through the pipe 28 and iiow through the hose 31 into the said receptacle which is to receive the oil.

The disk 14 is provided with a cam shoulder 32. A lever 33 is fulcrumed within the casing 1 and is provided with lugs 34 which normally bear against the shoulder 32 and hold the disk 14 against rotary movement. The outer end of the lever 33 is weighted as at 35 to hold the lugs 34 toward the periphery of the disk 14 so that theymay engage the shoulder 32 when the shoulder comes opposite the said lugs. The lugs 34 and the adjacent end portion of the lever 33 are disposed over the magnets 19. Consequently when the" said magnets are energized by the passage of the electric current over the wires 16 and 17 and as hereinbefore explained, the lugs 34 are removed away from the shoulder 32 and the disk 14 is free for rotation. An arm 36 is fixed to the shaftfof the disk 14 and is provided with a slot 37. The said arm and slot are normally horizontally dissed within the casing 1 and the block 10 ereinbefore described, is adjustably secured in the slot 37. The arm 36, block 10, rods lll i from between the terminals l and the elec- ,disk 14 at a 'rectionf tric circuit hereinbefore described is interrupted or broken. At the same time, the shoulder 32 upon the disk 14 has been carried beyond the lugs 34 and when the lever f 33 is released by the magnets 19, the lu 34 move up and enga e the periphery o the oint yond the shoulder 32. Thus the locklng mechanism of the pump is released but the parts are in position to automatically assume their locked relation after the pump has been manipulated to deliver the uantity of oil to the customer and as "has qbeen and will be further explained hereinafter. A gear wheel 40 is mounted upon the axis of the disk 14 and meshes with a gear wheel 4l `mounted u on a shaft 42 journalled in the c-asingll.; 3 e shaft 42v passes through the side of the calsing 1 and carries at lts outer end a crank handle 43. A holding pawl 44 is pivoted in the casing land is adapted to .engage be tween the teeth of the wheel 41 and hold the same against rotation in a reverse di- -VVhen the coin has been inserted in the coin chute and has completed the electric circuit to the magnets as hereinbefore, de-

scribed,` and the turning movement of the disk 14 has been started, the urchaser grasps the crank handle 43 and turns the same whereby the intermeshing gear wheels 41 and 40 continue the rotation of the disk 14 which carries the arm 36 aroundwith it and the rods 7 and 8 are nally wherebythe piston 5 is reciprocated inthe cylinder 4 and the oil is pumped from the cylinder through the pipe 22 into the receptacle 24.', Thus the oil is supplied y from the cylinder to the receptacle 24 and it is drawn o' from the receptacle 24 in the manner as hereinbefore described.

f the tion.

moved longitudi- When the arm 36 completes one revolution, the lever 33 has been released by the ma ets 19 and the lugs 34 come in contact wit the shoulder D32 upon the disk 14 and pump is locked in an` inoperative cond-i- Having described the invention, what is claimed 1s: a

1. A dispensing pump comprising a casing, a receptacle mounted thereon, .means or pumping liquid into the receptacle, means for drawing liquid from the receptacle, electric generators located in the cas-v ing and connected in open circuit with magnets, a coin chute arranged to deliver a coin to close the circuit, a disk located in the ath of movement of the coin, means for lookin the disk against turning movement and disposed in the field of the magnets, means connected with the disk for initially turning the disk when released, and manually operable means for completing the turning of the disk and to operate the ump' to elevate the liquid into the receptac e. 'g 2.- A liquid dispensin-g pump comprising a vcasing, arreceptacle mounted thereon, va pumpv located therein and arranged to deliver the liquid tothe receptacle,A means for drawing the liquid from the receptacle, batteries located in the casing and connected inopen circuit` with terminals 1 and connected with magnetsha lever ulcrumed in the casing'andhaving its free end disposed in the `field of themagnetsand provided with lugs, a coin chute leading into the casing and having its delivery end disposed toward the terminals ofthe electric circuit, a disk journalled in the casing and havi a pin disposed opposite the delivery len of the coin chute, an arm xed with relation to the disk and operatively connected with the pump, and means operatively connected with the disk and adapted to be manipulated exteriorly of the casing for rotating the disk.

In testimony whereof'I aiix my signature EDWARD D. BAKER. 

